linux-aspeed: Move to 5.4.26

This includes security and bug fixes from the 5.4.24, 5.4.25 and 5.4.26
stable releases.

Change-Id: Ic86bf03999c12ffc11e0267c6b4d2b56aa30f343
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/recipes-kernel/linux/linux-aspeed_git.bb b/recipes-kernel/linux/linux-aspeed_git.bb
index 83d6c90..ad443aa 100644
--- a/recipes-kernel/linux/linux-aspeed_git.bb
+++ b/recipes-kernel/linux/linux-aspeed_git.bb
@@ -1,6 +1,6 @@
 KBRANCH ?= "dev-5.4"
-LINUX_VERSION ?= "5.4.23"
+LINUX_VERSION ?= "5.4.26"
 
-SRCREV="2b5d0412d0407d7fa84eb2337d4263630ad58a62"
+SRCREV="1440369fcdef35f5b30dde253032188fd9611af8"
 
 require linux-aspeed.inc